Ventilator-fan.



n. WLMATS-LER.

VENTILATOR FAN.

Y APPLICATION FILED NOV, H. 1914.

1,"153,7. PatentedSept. 14, 1915.

: DAVID W. MATSLER, OF KINGSTON, OKLAHOMA.

- vENTILA'roR-rAN.

, Specification of Letters Patent.

Patented Sept. 14:, 1915.

Application filed November 11, 1914. Serial No. 871,607.

To all to]: 0m it may concern Be it known that 1, DAVID WV. MATsLnn, a citizen of the -United States, residing at Kingston, in the county of Marshall, State of Oklahoma, have invented certain new and useful Improvements in Ventilator- Fans; and I do hereby declare the follow ing to be a full, clear, and exact description of the invention, uch as will enable others skilled in the art to which it appertains to make and use the same. I

-This invention relates to ventilators, particularly to ventilator fans, and has for its object the provision of a simple and.

novel .inclosed ventilator fan adapted to suck in air and discharge it under pressure.

An important ob ect IS the provislon of a device of this character, the inlet portion of the casing of which is hinged and openable to afford access to the 1111361101. mechanism.

Another important ob ect-1s the provislon of means within the casing-adjacent the fan for preventing an accumulation of dead air and for also lessening back pressure against the fan.

Still another object is the provision of a device of this character which will be simpleand inexpensive in manufacture, efficient in operation, durable in use, and a general improvement of the art.

Other objects. and advantages such asimrovements in the specific details of con struction, will be made apparent during the course of the followingdescription and illustrated in the accompanying drawing, in which, a

Figure 1 is a longitudinal sectional View through my novel ventilator fan. Fig. 2 is a cross sectional view through the front bearing taken on the line 2-2 of Fig. 1, Fig. 3 is a cross section taken on the line 3-3 of Fig. 1 looking at the front of the inlet portion of the casing, Fig. i is a vertical cross section taken on the line 4l of Fig. 1, Fig. 5 is a sectional View on the line 55 of Fig. 1 looking at the rear bearing and showing the dead air preventing means, and Fig. 6 is a detail view of the inlet portion of the casing open.

Referring more particularly to the drawspider 13 through which extends a screw 14 engaged by a lock nut 15. A shaft 16 has.

one end supported in the bearing 12 and has its end engaged by the screw 14 for prevent-- ing longitudinal thrust. The shaft 16 carries a pulley 17 by means of which it maybe rotated.

Secured upon the base 10 and spaced from the upright 11 is a second upright -18 formed at its upper end as the lower half of a journal box and having coacting therewith a similarly formed upright member 19. The upright members 18 and 19 together form a journal box 20 for supporting the other end of the shaft 16. The uprights 11 and 19 are provided with oil cups 21 and 22 by means of which the journalboxes may be lubricated.

' My novel ventilator fan is inclosed withina casing which comprises a frusto-conical portion 23 secured withln substantially right members 18 and 19. The forward end of the casing portion 23 is supported by a standard 25 mounted upon the base 10 and carrying at its upper end a curved member-26 bolted or otherwise secured to the portion 23. The rear portion of'the casing comprises a shell 27 secured within the frusto-conical portion 23 by any desired means, as for instance rivets or bolts. The shell 27 consemicircular members 24: carried by the upverges to a narrow opening 28 which forms cured to the smaller end 34 of the casing section 23.

In order to produce suction through the inlet casing portion 29 and to discharge air under pressure through the opening 28, I provide a fan structure 35, which comprises a plurality of dished blades 36 secured upon the radial arms 37 of a pair of'spiders 38 having their hubs 39 rigidly secured upon the shaft 16.

It will be readily observed that when power is applied to the pulley 17, the shaft 16 will be rotated, carrying with it the spiders 38 and consequently the fan blades,

rotation of whi'chwwill cause air to be sucked .through any suitable suction pipe secured upon the end of the casing inlet portion 29 and through the shell 27 and out through the opening 28 to the atmosphere or to a suitable distributing pipe. It Will be noted that by opening one section 30 of the member 29, access/may be had to the forward portion of the fa In order to prevent the accumulation of dead air at the center of the fan 35, I provide a deflecting member which comprises a conical shell 40 terminating at its large end in a cylindrical portion 41 held in place upon the upright member 18 and 19 by being secured within curved plates 42 secured thereon. It will be seen that When the fan 35 is rotated, air will strike the conical defleeting member 40 and will be thrown out- 44: disposed within and secured to the cylin- 4 with means whereby an accumulation of ventilation.

drical portion 41- of the shell 110.

From the foregoing description and a study 'of the drawingit will be apparent that I have thus provided a simple and powerful ventilator fan which is provided dead air is prevented, whereby back pressure upon the fan is eliminated and which is capable of producing strong'and powerful I It will be readily understood that I resaid main easing at its inlet end and com prising two similar sections hinged at one edge and detachably connected at their other edges.

2. Aventilator fan structure comprising a supporting base, an upright secured thereon, a frusto-conical shell having its large end secured by curved plates carried on said upright, a separable elbow casing connected with the smaller end of said shell, a shaft extending through. said shell and journaled through said upright, a rotary fan secured on said shaft, a second shell secured to the larger end of said first named shell and terminating in a constricted discharge opening, and means carried by said upright member for deflecting air away from the center of said fan. I

In testimony whereof I aflix my signature, in the presence of two Witnesses.

DAVID W. MATsLnn Witnesses:

WATTON LoNnnoM, o W. S. GRANT. 

